1. Document Title/Description1 Our prism and Grating Spectrometer http://cord.org/cm/leot/course10_Mod01/Module10-1.htm

2. Document Title/Description2 Our prism and Grating Spectrometer http://www.spectra-magic.de/E-Configuration.htm http://opticalea.com/Spectrometers.html

3. Our prism and Grating Spectrometer http://gratings.newport.com/library/technotes/technote4.asp GRATING EQUATION The general grating equation is usually written as: nλ= d(sin i’ + sin i) where n is the order of diffraction, λ is the diffracted wavelength, d is the grating constant (the dist. between successive grooves), i is the angle of incidence measured from the normal,and i' is the angle of diffraction measured from the normal. For a specific diffracted order (n) and angle of incidence (i), different wavelengths (λ) will have different diffraction angles (i'), separating polychromatic radiation incident on the grating into its constituent wavelengths.